请教一道逻辑问题

绿绿 · 发表于 2003-8-10 21:18:00

Exports of United States wood pulp will rise considerably during this year.The rezason for the rise is that the falling value of the dollor will make it cheaper for the paper manufacturers in Japan and Western Europe to buy American wood pulp than to get is from other sources.
Which of the following is an assumption made in drawing the conclusion above?
B. The quality of the wood pulp produced in the US would be adequate for the purposes of Japanese and Western European paper manufacturers.
C. Paper manufacturers in Japan and Western Europe would prefer to use wood pulp produced in the US if cost were not a factor.
答案是B,我选择C. 在选的时候就没分析清除B,C的区别。各位帮帮忙吧！

sunder · 发表于 2003-8-10 22:52:00

b.排除它因，质量不会有问题。
c.成本低是题干推理的论据。讨论不考虑成本因素的情况，属于无关。

木川 · 发表于 2003-8-11 00:12:00

我觉得此题应该是桥梁型假设问题，不属于排除他因。结论是US一定出口得多，前提是因为美元贬值使得J国进口便宜了。那么假设和前提之间就有一个桥梁，即质量能够满足，不然即使便宜，也不进口。
而C选项是无关选项。如果成本不是原因得话，J国会如何如何。是属于if之后提干没有出现得内容。

请教一道逻辑问题

请教一道逻辑问题

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